History of Astronomy |
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Page 10
... pole of the moon's orbit revolves just once round the pole of the ecliptic , and for this reason the eclipses in one cycle are repeated with very slight modification in the next cycle , and so on for many centuries . It may be that the ...
... pole of the moon's orbit revolves just once round the pole of the ecliptic , and for this reason the eclipses in one cycle are repeated with very slight modification in the next cycle , and so on for many centuries . It may be that the ...
Page 19
... pole of the ecliptic once in eighteen years complicated the problem . He located the moon's excentric as he had done ... pole round the pole of the ecliptic He once in 26,000 years in the opposite direction to the THE GEOMETRICAL PERIOD 19.
... pole of the ecliptic once in eighteen years complicated the problem . He located the moon's excentric as he had done ... pole round the pole of the ecliptic He once in 26,000 years in the opposite direction to the THE GEOMETRICAL PERIOD 19.
Page 20
... pole , and must have been used as the pole - star . In the north face of the Great Pyramid is the entrance to an inclined passage , and six of the nine pyramids at Gizeh possess the same feature ; all the passages being inclined at an ...
... pole , and must have been used as the pole - star . In the north face of the Great Pyramid is the entrance to an inclined passage , and six of the nine pyramids at Gizeh possess the same feature ; all the passages being inclined at an ...
Page 27
... poles of the ecliptic once a year ....... Copernicus did not know that motion in a straight line is the natural motion ... pole of the ecliptic retrograde ( i.e. , opposite to the orbital revolution ) , and by making it perform more than ...
... poles of the ecliptic once a year ....... Copernicus did not know that motion in a straight line is the natural motion ... pole of the ecliptic retrograde ( i.e. , opposite to the orbital revolution ) , and by making it perform more than ...
Page 28
... pole of the ecliptic , making one revolution and a twenty - six thousandth part of a revolution in the sidereal year , in the opposite direction to its orbital motion . In view of this fanciful structure it must be noted , in fairness ...
... pole of the ecliptic , making one revolution and a twenty - six thousandth part of a revolution in the sidereal year , in the opposite direction to its orbital motion . In view of this fanciful structure it must be noted , in fairness ...
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Common terms and phrases
accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith